C#中检查ArrayList中是否包含某个元素
csharpserver side programmingprogramming更新于 2025/9/11 6:02:00
检查ArrayList中是否包含某个元素，代码如下 −
示例
using System;
using System.Collections;
public class Demo {
public static void Main(){
ArrayList list = new ArrayList();
list.Add("One");
list.Add("Two");
list.Add("Three");
list.Add("Four");
list.Add("Five");
list.Add("Six");
list.Add("Seven");
list.Add("Eight");
Console.WriteLine("ArrayList elements...");
foreach(string str in list){
Console.WriteLine(str);
}
Console.WriteLine("ArrayList is read-only? = "+list.IsReadOnly);
Console.WriteLine("Does the element Six in the ArrayList? = "+list.Contains("Six"));
}
}
输出
这将产生以下输出 −
ArrayList elements... One Two Three Four Five Six Seven Eight ArrayList is read-only? = False Does the element Six in the ArrayList? = True
示例
现在让我们看另一个例子 −
using System;
using System.Collections;
public class Demo {
public static void Main(){
ArrayList arrList = new ArrayList();
arrList.Add(100);
arrList.Add(200);
arrList.Add(300);
arrList.Add(400);
arrList.Add(500);
Console.WriteLine("Display elements in a range...");
IEnumerator demoEnum = arrList.GetEnumerator(1, 3);
while (demoEnum.MoveNext()) {
Object ob = demoEnum.Current;
Console.WriteLine(ob);
}
Console.WriteLine("Does the element 1000 in the ArrayList? = "+arrList.Contains(1000));
}
}
输出
这将产生以下输出 −
Display elements in a range... 200 300 400 Does the element 1000 in the ArrayList? = False
